Short answer

When designing exercises or equipment aimed at strengthening scapular stabilizers, consider the use of unstable surfaces to modulate muscle activation, particularly for the trapezius and serratus anterior.

Field: Human Factors
Source: Frontiers in Physiology (2023)
Method: Systematic Review and Meta-Analysis
Evidence: Moderate effect

Performing push-up variations on unstable surfaces can significantly increase the activation of specific scapular stabilizing muscles, particularly the upper and middle trapezius. This human factors research insight is drawn from a 2023 study published in Frontiers in Physiology. Using Systematic review and meta-analysis, researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing exercises or equipment aimed at strengthening scapular stabilizers, consider the use of unstable surfaces to modulate muscle activation, particularly for the trapezius and serratus anterior.

Study

Human FactorsRecentModerate effect

Unstable surfaces during push-ups increase upper trapezius and middle trapezius muscle activation

Performing push-up variations on unstable surfaces can significantly increase the activation of specific scapular stabilizing muscles, particularly the upper and middle trapezius.

Frontiers in Physiology · 2023

Key Findings

01Unstable surfaces increased upper trapezius activity during standard and knee push-ups.
02Unstable surfaces increased middle trapezius and serratus anterior activity during the push-up plus exercise.

Application

Design takeaway

How to apply

When developing a new fitness device or exercise program for shoulder stability, test the impact of different surface types (e.g., stability balls, BOSU trainers) on muscle activation using EMG.

Project actions

01When researching exercises, look for studies that use objective measurements like EMG.
02Consider how the environment or equipment can alter the biomechanics of a movement.

Method & Evidence

AimTo systematically review and meta-analyze the electromyography (EMG) data of scapular stabilizers during push-up exercises performed on unstable surfaces by individuals without scapular dyskinesis.

MethodSystematic Review and Meta-Analysis

ProcedureA systematic search of four databases was conducted for studies examining scapular muscle activity during push-ups on unstable surfaces. Methodological quality was assessed, and data were combined using a random-effects model to calculate standardized mean differences (SMD) for muscle activation.

ContextExercise science, rehabilitation, biomechanics

Variables

IVSurface type (stable vs. unstable)

DVElectromyography (EMG) activity of scapular stabilizer muscles (e.g., upper trapezius, middle trapezius, serratus anterior)

CVParticipant's lack of scapular dyskinesis, type of push-up variation (standard, knee, push-up plus)

Strengths & Limitations

Strengths

+Systematic review and meta-analysis provide a robust synthesis of existing evidence.
+Inclusion of EMG data offers objective measures of muscle activity.

Limitations

It can be difficult to control for all variations in participant technique or the exact type of unstable surface used.

Reliability & validity

The meta-analysis approach increases the reliability of the findings by pooling data from multiple studies. Validity is supported by the use of objective EMG measurements.

Think critically

How might the findings change if the participants had pre-existing scapular dyskinesis?

Design Principles

"Surface instability can be a variable used to modulate muscle recruitment patterns for targeted strengthening."

Understanding how different exercise surfaces affect muscle engagement is crucial for designing effective rehabilitation programs and training protocols. This knowledge allows for more targeted interventions to strengthen specific muscle groups and improve shoulder stability.

What This Means for Your Design

Doing push-ups on wobbly surfaces makes some of your shoulder muscles work harder, especially the muscles in your upper and middle back.

How to use in your project

1.Use this research to justify the choice of exercise or equipment in your design project, explaining how it targets specific muscle groups.

Add to My Project

Quick Cite

Paragraph starter

This study highlights that the use of unstable surfaces during push-up exercises can significantly increase the activation of key scapular stabilizing muscles, such as the upper and middle trapezius. This finding is relevant to the design of rehabilitation and training equipment, as it suggests that incorporating instability can be a strategy to enhance muscle engagement and improve shoulder girdle stability.

Source

Frontiers in Physiology

Electromyography of scapular stabilizers in people without scapular dyskinesis during push-ups: a systematic review and meta-analysis

journal · 2023

View source

Questions About This Research

What does the research say about unstable surfaces during push-ups increase upper trapezius and middle trapezius muscle activation?: When designing exercises or equipment aimed at strengthening scapular stabilizers, consider the use of unstable surfaces to modulate muscle activation, particularly for the trapezius and serratus anterior. Evidence: Frontiers in Physiology (2023).
Why does "Unstable surfaces during push-ups increase upper trapezius and middle trapezius muscle activation" matter for design?: Understanding how different exercise surfaces affect muscle engagement is crucial for designing effective rehabilitation programs and training protocols. This knowledge allows for more targeted interventions to strengthen specific muscle groups and improve shoulder stability.
How can designers apply this research?: When designing exercises or equipment aimed at strengthening scapular stabilizers, consider the use of unstable surfaces to modulate muscle activation, particularly for the trapezius and serratus anterior.
What were the main findings?: Unstable surfaces increased upper trapezius activity during standard and knee push-ups.. Unstable surfaces increased middle trapezius and serratus anterior activity during the push-up plus exercise.
What research method was used?: Systematic Review and Meta-Analysis.
How strong is the evidence?: Evidence strength is rated Moderate effect, based on a 2023 journal from Frontiers in Physiology.
What should I do differently in my next project?: When developing a new fitness device or exercise program for shoulder stability, test the impact of different surface types (e.g., stability balls, BOSU trainers) on muscle activation using EMG.
What are the limitations?: The study focused on individuals without pre-existing scapular dyskinesis, and the findings may not directly apply to populations with such conditions. The specific types of unstable surfaces used across studies varied.